Oil-burning apparatus



Oct. 9, 1928. 1,687,349

T. A. QUART QIL BURNING APPARATUS Filed Aug. 26, 1927 2 Sheets-Sheet 1In van/tor: T/mareA. Quar His .4 ttar/zey.

Oct. 9, 1928. 1,687,349

T'. A. QUART OIL BURNING APPARATUS Filed Aug. 26, 1927 2 Sheets-Sheet 2/fi 8 I Fate-rated Get. 9, 1928.

THURE A. QUART, HARTFORD, CONNECTICUT.

OIL-BURNING APPARATUS.

Application filed August 28, 1927. Serial No. 215,694.

This invention relates to oil burning apparatus and particularly toapparatus of this character which is especially adapted for use withhouse heating furnaces. Such devices are ordinarily operated by personsof inexperience in mechanical principles who are prone to neglectmechanism requiring frequent attention and to open too far or not farenough hand operated valves such as enter into the make-up of manyheating systems now on the market. Primarily the object of my inventionis the provision of apparatus entirely free of valves and other partsneeding frequent manual adjustment-,- 5 an apparatus so designed thatwhen once installed the turning of a switch will accomplish everyrequisite. H

In the accompanying drawings I have shown one convenient form ofembodiment of my invention which to enable those skilled in the art topractice the same will'be set forth fully in the following detaileddescription while the novelty of the invention is defined in theappended claims.

In the drawings, I a

Figure 1 is a plan view of apparatus embodying my invention. Figure 2,is a side View of the apparatus shown in Fig. 1. Figure 3, is a sideview of important details of my invention with certain parts shown insection or partly in section. Figured, is a transverse sectional view online 4-4 of Fig. 3.

Figure 5, is a sectional view on line 55 of Fig. 4. Figure 6, is asectional view of the fire pot online 6-6 of Fig. 1.

Referring to the drawings several of the essential elements of the oilburning-apparatus illustrated may be briefly described asfol- 'lows. Thefire pot, designated by l, is of a type adapted to be set up on itsstandard 2,

within such furnaces as are commonly used forheating residences or otherbuildings,

, Connecting the fire pot with a blower 3, is an air conduit 1, throughwhich air under pressure is forced to the fire pot when the blower isoperated as by the electric motor 5. Both the blower and motor may asshown be mounted on a bracket 6, supported in a stand ard 7, so as topermit in some suitable and convenient manner of vertical adjustment ofthe bracket for a purpose that will hereinafter more fully appear.

Within the fire pot 1, is a casting 8, comprising a burner wherein oilis vaporized and ignited as long as it is properly fed thereto by thefeed devices which will presently be described. Initial vaporization andignition of the oil 1s effected by a pilot flame of gas deliveredagainst the side of the burner through a jet 9, to which gas is suppliedby the pipe 10, see Figs. 1 and 6. The air current delivered throughthe'burner assumes a circular motion in the fire pot and in order thatthis may not extinguish the pilot flame a bafiie 11, is depended fromthe-burner at the side thereof. A small opening 12, however is formed inthe battle to permit suflicient vaporized oil to pass therethrou'gh to 7become ignited by the pilot flame.

Means for controlling the supply of oil delivered to the burner includeseveral devices introduced into the pipe line 13, leading from the mainsupply reservoir. The first of these devices is an automatic safetyshutoff valve 1 1, and next to this is anoil feed controlling device 15, which comprises a chamber 16, containing float 17, adapted to openand close a valve 18, according to requirements to maintain a constantlevel of oil as designated by line X-X, Fig. 8;

Should this valve fail to function in shutting 7 off the oil, anoverflow pipe 19, isprovided' to conduct the excess oil to the pan 20,which when weighted with a predetermined amount of liquid, actuates theshut-off valve '14, and positively cuts off the flow of fuel. In asimilar manner this automatic valve is actuated if an excess amount ofoil accumulates in the fire not, in which event said excess oil flowsthrongh the discharge pipe 21, into the pan 20, and effects the safetyshut-off. s

From the feed controlling device 15, and

from below the normal level of oil maintained therein, a pipe 22,leadsto the burner 8, extending in proximity to the air conduit 1, andentering the latter adjacent an extension 23, of the fire pot, with thedelivery end of 7 said pipe just enough below the normal level of oil inthe chamber 16, to efiect by gravity a desired flow of fuel to theburner. Adjustment to effect this slight difference inlevel is easilyaccomplished by raising or lowering the [bracket which carries theblower and motor. V

The gravity feed of oil through pipe 22, furnishes fuel in the burnerand fire pot for combustion which is supported by air from the blowerforced through conduit 4. Means are desirable for startingandstopping'this flow of fuel through pipe 22, in accordance with theoperation of the blower, I therefore provide a valve as 24, operable bythe blower,

in a manner that will presently appear, to open and effect the flow offuel and operable when the blower stops to cut oil or reduce the flow offuel. Thisvalve is introduced between the oil level regulating device15, and the delivery end of pipe 22, in a portion of said pipesuiiiciently lowered to provide for a comparatively long valve stem 25,and guide sleeve 25, therefor, which extend well above the level of oilmaintained by the float 17. Means for actuating the valve include a thinlight disk 26, secured to the valve stem 25, between adjusting nuts 27and 28. In operable relation to disk is the eccentrically formed end ofa rod 29, which rod is extended through the upper portion of conduit land j ournaled inbearings 3O 31, provided on the conduit. Nithin theconduit the rod has rigidly secured theretoa vane 32, normally, byvirtue of gravity assuming a vertical position but operable by airpressure created by the blowor to swing upwardlyand turn the rod so thatits eccentric end 83, acting as a cam is effective to engage disk 26,and thereby to open valve 24. When the vane 32, is in its verticalposition or that assumed when the blower is stopped the cam 38 passesout of contact with the disk on the valve stem and permits the valve topartly or entirely close as may be desired. It will. be observed thatthe simple construction of the valve permits the stem portion to rotatewithin the sleeve and the valve to freely seat itself to effectivelystop the oil flow, inasmuch as the disk 26 is circular and at all timesin position to be engaged by cam 33, without cramping action of theengaging parts. Furthermore it will be clear that the only outside jointbetween the valve stem and its guiding sleeve is well above the level ofoil maintained by thefloat'l'l, so that annoying leakage is preventedwithout recourse to the use of packing, that is to say the valve is afloating one. Normally it tends to close under the effect of its ownweight alone and although it freely rotates about its vertical axis itmaintains a substantially constant relation operably to its actuatingelement. 2

Operation of the apparatus as thus far described includes the use of apilot flame of gas such as may readily be supplied from the systemsquite universally available in urban localities. When such. a gas supplyis not at hand the necessary pilot flame may be maintained in myapparatus by a small amount of fuel delivered through valve 24.

r The required opening for this limited amount of flow may be assured byproviding for a stop adjustment affecting valve 24L in a manner toprevent complete closure thereof when the valve tends to assume itsclosed position as when the action of the blower ceases. To serve asadjustable stop means for valve 24, a nut may be threaded on the valvestem adjacent the guide sleeve 25, or a nut (not 1. Apparatus of theclass described includline leading to a burner from a device foriaintaining a constant level of fuel supply, a valve chamber in the pipeline below the predetermined fuel level, a valve seat in said mg incombination with a gravity feed pipe chamber, a sleeve extending fromthe valve chamber to a point well above the predetermined fuel. level, avalve having a stem freely movable in the sleeve and extended thereabove, means. including a cam for lifting he valve, and a disk securedto the valve stem for engagement by the cam, the form of said disk beingsymmetrical so that the valve may rotate about its vertlcle axis Withoutchangmg its balance;

2. Apparatus of the class described including in combination with an airconduit leading from a blower to a burner and a gravity feed pipe linealso leading. to the burner from a device for maintaining a constantlevel of fuel supply, a valve chamber in the pipe line below thepredetermined fuel level, a valve seat in the chamber, a sleeveextending from the valve chamber to a point well above the predeterminedfuel level, afloating valve having a stem extended beyond the end of thesleeve, a disk adjustably secured to the valve stem above the sleeve, acam positioned below'the disk, a rod extended from the cam transverselythrough the-air conduit and a vane secured to the rod ,within theconduit.

3. Apparatus of the class, described including in combinationan airconduit and a fuel pipe line, a freely rotatable floating valve inthepipe line having an elongated stem, a symmetrical disk secured to thevalve stem, a cam positioned below the disk, and means comprising'a vanein the air conduit for oscillating the cam to effect operation of thevalve. Y

4:. Apparatus ofthe class described including in combination an airconduit leading from a blower to burner and a gravity feed pipe linealso leading to the burner, a de vice in the pipe line and supported bythe air conduit for maintaininga constant level of fuel supply, a valvechamber included in the pipe line between the constant level maintainingdevice and the burner and positioned below the predetermined fuel-level,a valve seat in said chamber, a'freely rotatable float-- ing gravityclosable valve for engaging said seat and means including an airpressure operated vane in the conduit for lifting the valve. 7 i

5. Apparatus of the class described including in combination an airconduit, a fuel feed pipe line adjacent the rotatable floating valvehaving an e'nlongated. stem'extending from the feed pipe, a disk securedto the outer end of the stem, a sleeve surrounding the stem a rodjournaled transversely of the air con duit and terminating in a cam forengagement with the disk, and a vane secured to the rod within theconduit. I

6. Apparatus of the class described includ-v ing in combination an airconduit, a fuel feed pipe line adjacent the air conduit, a freelyrotatable floating valve having an elongated stem extending from thefeed pipe, a symmetrical disk supported by the stem. and adjustablelongitudinally thereof, a sleeve surair conduit, a freely below thedisk,

rounding the stem below the disk, a rod journaled transversely of theair conduit and terminating in a cam for engagement with the disk, and avane secured to the rod within the conduit.

7. In combination with a gravity feed pipe line leading from a devicefor maintaining a constant level of liquid, a valve chamber in the pipeline below the predetermined level of liquid, a valve seat in saidchamber, a sleeve extended from to a point above the predetermined levelof liquid, a valve having a stem extended through the sleeve and movablerotatively and longitudinally Within the sleeve, a symmetrical disksecured to the valve stem, and means operable upon the disk to effectlongitudinal movement of the valve While perinitting rotary movementthereof.

- In testimony whereof I aliix my signature.

THURE A. QUART.

the valve chamber

